package servlet;

import com.jspsmart.upload.File;
import com.jspsmart.upload.SmartUpload;
import com.jspsmart.upload.SmartUploadException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.JspFactory;
import javax.servlet.jsp.PageContext;
import java.io.IOException;

@WebServlet(value = "/upload")
public class UploadServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {

        try {
            //创建上传文件的对象
            SmartUpload smartUpload = new SmartUpload();

            //初始化上传操作
            PageContext pageContext = JspFactory.getDefaultFactory().getPageContext(this, req, resp, null, false, 1024, true);
            smartUpload.initialize(pageContext);

            //设置编码
            smartUpload.setCharset("utf-8");

            //上传
            smartUpload.upload();

            //获取文件信息
            File file = smartUpload.getFiles().getFile(0);
            String fileName = file.getFileName();
            String contentType = file.getContentType();

            //获取文本信息
            String uname = smartUpload.getRequest().getParameter("uname");
            System.out.println("uname:" + uname);
            //指定上传的路径
            String uploadpath = "/uploadfiles/" + fileName;

            //保存到指定路径
            file.saveAs(uploadpath, File.SAVEAS_VIRTUAL);

            //跳转到成功页面
            req.setAttribute("filename", fileName);
            req.getRequestDispatcher("success.jsp").forward(req, resp);
        } catch (SmartUploadException e) {
            e.printStackTrace();
        }

    }
}
